CN220673635U - Energy storage inverter and energy storage system - Google Patents

Abstract

The utility model discloses an energy storage inverter and an energy storage system with the same, wherein the energy storage inverter comprises: the heat radiator comprises a radiator, a shell and a circuit board, wherein the shell is connected with the radiator and forms a containing cavity with the radiator; the circuit board is arranged in the accommodating cavity, and the board surface of the circuit board is vertical relative to the radiator. According to the energy storage inverter provided by the embodiment of the utility model, the board surface of the circuit board is vertically arranged relative to the radiator, so that the heat dissipation effect can be achieved, the space occupied by the circuit board in the accommodating cavity can be reduced, the space arrangement is facilitated, the volume of the energy storage inverter is reduced, the miniaturization of a product is realized, and the energy storage inverter is simple in structure and easy to construct.

Description

Energy storage inverter and energy storage system

Technical Field

The utility model relates to the technical field of inverters, in particular to an energy storage inverter and an energy storage system.

Background

The energy storage inverter is an inverter that stores electric energy into a battery and converts the electric energy in the battery into alternating current when necessary. The technology is widely applied to the new energy fields of solar power generation, wind power generation, fuel cells and the like, and the working principle of the technology is that solar energy (or other energy sources) is converted into direct current and is charged into a battery module for storage. When the user needs to use electricity, the energy storage inverter can convert direct current in the battery into alternating current and output the alternating current to the user for use. The internal structure layout of the energy storage inverter in the related art is unreasonable, and the space occupied by the circuit board in the energy storage inverter is large, so that the whole volume of the energy storage inverter is large, and the product miniaturization is not facilitated.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent. Therefore, an object of the present utility model is to provide an energy storage inverter, which can reduce the space occupied by a circuit board in a receiving cavity, is beneficial to space arrangement, and is beneficial to reducing the volume of the energy storage inverter, thereby realizing miniaturization of products, and has a simple structure and easy construction.

Another object of the present utility model is to provide an energy storage system, including the aforementioned energy storage inverter.

According to an embodiment of the present utility model, an energy storage inverter includes: the heat radiator comprises a radiator, a shell and a circuit board, wherein the shell is connected with the radiator and forms a containing cavity with the radiator; the circuit board is arranged in the accommodating cavity, and the board surface of the circuit board is vertical relative to the radiator.

According to the energy storage inverter provided by the embodiment of the utility model, the board surface of the circuit board is vertically arranged relative to the radiator, so that the heat dissipation effect can be achieved, the space occupied by the circuit board in the accommodating cavity can be reduced, the space arrangement is facilitated, the volume of the energy storage inverter is reduced, the miniaturization of a product is realized, and the energy storage inverter is simple in structure and easy to construct.

In addition, the energy storage inverter according to the above embodiment of the present utility model may further have the following additional technical features:

in some examples of the utility model, the housing further includes a side plate extending in a circumferential direction of the heat sink and surrounding the accommodating chamber, and a plate surface of the circuit board is laminated with the side plate.

In some examples of the utility model, the circuit board is fixedly attached to the side plate.

In some examples of the present utility model, the side plate is provided with a support column, one end of the support column is connected to the side plate, the support column extends in a direction perpendicular to the side plate, and the circuit board is connected to the other end of the support column.

In some examples of the utility model, the support post has opposite first and second ends, the first end of the support post having a stud adapted to be coupled to the heat sink, the second end adapted to support the circuit board.

In some examples of the present utility model, the circuit board is provided with a mounting hole, the second end is provided with a positioning hole, the mounting hole is opposite to the positioning hole, and the energy storage inverter further includes: and the positioning part is matched with the positioning hole so as to position the circuit board between the support column and the positioning part.

In some examples of the utility model, the outer peripheral surface of the support post protrudes beyond the outer peripheral surface of the stud to construct a stepped structure between the support post and the stud.

In some examples of the utility model, the stud is configured as a hexagonal prism.

In some examples of the utility model, the end of the second end of the support post is provided with a tightening notch.

In some examples of the utility model, the stud has a notched groove on its circumferential surface.

In some examples of the present utility model, a mounting seat is provided on the housing, a mounting hole is provided on the mounting seat, and the stud is in threaded fit with the mounting hole.

In some examples of the utility model, the circuit board is fixedly connected to at least one of the heat sink and the housing.

In some examples of the utility model, the heat sink has opposite first and second sides, the circuit board is disposed on the first side of the heat sink, and the second side of the heat sink is provided with a plurality of heat dissipating fins.

An energy storage system according to an embodiment of the present utility model includes: the energy storage inverter is electrically connected with the battery.

According to the energy storage system provided by the embodiment of the utility model, the space occupied by the energy storage system is reduced by applying the energy storage inverter, and the space arrangement is facilitated.

In some examples of the utility model, the energy storage inverter has a dc output interface, and the energy storage system further includes a powered device having a dc power supply port electrically connected to the dc output interface.

In some examples of the utility model, the powered device includes a heating and ventilation device.

Drawings

FIG. 1 is a schematic diagram of an energy storage inverter according to some embodiments of the utility model;

FIG. 2 is an enlarged view of FIG. 1 at circle A;

FIG. 3 is a schematic diagram of an energy storage inverter according to some embodiments of the utility model;

FIG. 4 is a schematic view of a partial structure of an energy storage inverter (showing a support post assembled with a mounting base) according to some embodiments of the present utility model;

FIG. 5 is a schematic illustration of the structure of a support column in some embodiments of the utility model;

fig. 6 is a schematic view of a mounting base according to some embodiments of the utility model.

Reference numerals:

100. an energy storage inverter; 10. a heat sink; 11. a heat radiation fin; 20. a housing; 21. a side plate; 201. a receiving chamber; 30. a circuit board; 301. a mounting hole; 40. a support column; 41. a first end; 411. a stud; 42. a second end; 402. positioning holes; 401. a notch groove; 60. a mounting base; 601. a fitting hole; 70. a heat radiation fan; 80. and (5) a control panel.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

Referring to fig. 1 to 6, an energy storage inverter 100 according to an embodiment of the present utility model includes: the radiator 10, the shell 20 and the circuit board 30, wherein the shell 20 is connected with the radiator 10, a containing cavity 201 is formed between the shell 20 and the radiator 10, and the circuit board 30 is arranged in the containing cavity 201. Specifically, the radiator 10 is used for radiating heat generated by the energy storage inverter 100 in the working process, the accommodating cavity 201 for accommodating the electric device can be formed between the housing 20 and the radiator 10, the circuit board 30 is arranged in the accommodating cavity 201, the circuit board 30 can be in a relatively stable and dry environment, the circuit board 30 is protected, the radiator 10 connected to the housing 20 can radiate heat of the electric device and the circuit board 30 running in the accommodating cavity 201, the radiating effect is improved, the running stability is kept, wherein the board surface of the circuit board 30 is vertical relative to the radiator 10, the radiating effect can be improved, the circuit board 30 can be placed in the accommodating cavity 201 in a vertical state, the occupied space of the circuit board 30 can be reduced to a great extent, and the space utilization rate is improved. Specifically, the circuit board 30 generally has a flat board surface, and in the related art, the board surface is tiled in the inverter, so that the occupied space is large, and the circuit board 30 is erected in the accommodating cavity 201, so that the occupied space after the circuit board 30 is assembled is greatly reduced, and the arrangement is convenient.

According to the energy storage inverter 100 of the embodiment of the utility model, the board surface of the circuit board 30 is vertically arranged relative to the radiator 10, so that the heat dissipation effect can be achieved, the space occupied by the circuit board 30 in the accommodating cavity 201 can be reduced, the space arrangement is facilitated, the volume of the energy storage inverter 100 is reduced, the miniaturization of a product is realized, and the structure is simple and easy to construct.

In some embodiments of the utility model, referring to fig. 1 and 2, the housing 20 further includes a side plate 21, and the side plate 21 extends in the circumferential direction of the heat sink 10 and surrounds the accommodating chamber 201, whereby the side plate 21 and the heat sink 10 may configure the accommodating chamber 201 to facilitate placement of electrical devices. The board surface of the circuit board 30 is laminated with the side plate 21, so that the circuit board 30 can be arranged conveniently, so that the circuit board 30 can be perpendicular to the radiator 10, and the stability of the circuit board 30 after being mounted is improved. Specifically, the board surface of the circuit board 30 is perpendicular to the heat exchanger 10 and parallel to the side plates 21. More specifically, the board surface of the circuit board 30 and the side plate 21 are stacked, so that the side plate 21 can provide support for the board surface, so as to improve the structural strength after assembly and facilitate improving the structural stability.

In some embodiments of the present utility model, the circuit board 30 is fixedly connected to the side plate 21, which can improve the stability of connection and is beneficial to improving the overall structural strength of the energy storage inverter 100.

Referring to fig. 2 and 5, in some embodiments of the present utility model, a support column 40 is provided on the side plate 21, one end of the support column 40 is connected to the side plate 21, the support column 40 extends in a direction perpendicular to the side plate 21, and the circuit board 30 is connected to the other end of the support column 40. That is, a support column 40 may be provided between the side plate 21 and the circuit board 30, and the support column 40 may connect the side plate 21 and the circuit board 30. The support column 40 can play the effect of supporting the circuit board 30 on the one hand, can improve the stability of circuit board 30 installation, and in addition, support column 40 extends along the direction of perpendicular to curb plate 21 for support column 40 can be with curb plate 21 and circuit board 30 spaced apart, so that have the clearance between curb plate 21 and the circuit board 30, and this clearance can be used for ventilation air, so that take away the heat of circuit board 30 during operation face, thereby improve the radiating effect. The support columns 40 may also facilitate assembly and maintenance of the circuit board 30, specifically, by providing the support columns 40 between the side plates 21 and the circuit board 30, the distance between the circuit board 30 and the side plates 21 may be changed by changing the length of the support columns 40 extending during assembly, thereby facilitating adjustment of the position of the circuit board 30 assembly, and the circuit board 30 may be easily detached from the support columns 40 during later maintenance, thereby facilitating repair and replacement.

More specifically, in connection with fig. 5, in some embodiments of the present utility model, the support post 40 has opposite first and second ends 41, 42, the first end 41 of the support post 40 having a stud 411, the stud 411 being adapted to be coupled to the side plate 21, and the second end 42 being adapted to support the circuit board 30 to mount the circuit board 30 to the housing 20. Specifically, the side plate 21 may have a mating hole, and the stud 411 is fixedly connected to the side plate 21 through the mating hole, so that the first end 41 of the support column 40 is connected to the side plate 21, and the circuit board 30 is connected to the second end 42 of the support column 40, for example, the second end 42 is provided with a mounting portion for clamping the circuit board 30, or a fixing portion for fixing the circuit board 30, so as to connect the circuit board 30 to the second end 42.

Referring to fig. 2 and 5, in some embodiments of the present utility model, the circuit board 30 is provided with a mounting hole 301, the second end 42 is provided with a positioning hole 402, the mounting hole 301 is disposed opposite to the positioning hole 402, and the energy storage inverter 100 further includes: the positioning portion (not shown in the drawings) cooperates with the positioning hole 402 to position the circuit board 30 between the support column 40 and the positioning portion, so that the circuit board 30 can be fixedly connected to the second end 42 of the support column 40, and the circuit board 30 can be protected by positioning the circuit board 30 in such a manner that the positioning portion cooperates with the support column 40, and the circuit board 30 can be conveniently detached for maintenance of the circuit board 30. Specifically, the positioning portion may be screwed with the positioning hole 402, and when the assembly is performed, the mounting hole 301 of the circuit board 30 is disposed opposite to the positioning hole 402, so that the positioning hole 402 may be exposed, and after the positioning portion is mounted in the positioning hole 402, the circuit board 30 may be clamped between the support column 40 and the positioning portion. The diameter of the mounting hole 301 may be slightly larger than the positioning hole 402, so as to facilitate rapid assembly, and the accuracy requirement for the mounting hole 301 is not high, which is beneficial to reducing the manufacturing cost. For example, the positioning portion may be a screw, and the screw may pass through the mounting hole 301 and be in threaded engagement with the positioning hole 402, so that the positioning portion is provided to position the circuit board 30, thereby improving the stability of mounting the circuit board 30 and facilitating maintenance of the circuit board 30.

When the circuit board 30 needs to be overhauled or replaced, the positioning part can be unscrewed from the supporting column 40, so that the circuit board 30 can be disassembled, the overhauling is convenient, and the maintenance or replacement efficiency of the energy storage inverter 100 is improved.

In some embodiments of the present utility model, referring to fig. 5, the outer peripheral surface of the support post 40 protrudes beyond the outer peripheral surface of the stud 411 to construct a stepped structure between the support post 40 and the stud 411. After the support column 40 is connected with the side plate 21, the contact area between the support column 40 and the side plate 21 can be increased by arranging the step structure, the support strength and rigidity of the support column 40 to the side plate 21 are enhanced, and the stability and reliability of connection are further improved.

In some embodiments of the present utility model, the stud 411 is configured as a hexagonal prism that is convenient to be directly screwed by hand, improves the assembly efficiency of the energy storage inverter 100, and can facilitate the maintenance of the energy storage inverter 100 in a later stage.

In some embodiments of the present utility model, the end of the second end 42 of the support column 40 is provided with a tightening notch, which may be a straight notch or a cross notch, so as to facilitate tightening the support column 40 by a screwdriver, facilitate assembling the energy storage inverter 100, improve the assembling efficiency, and facilitate the maintenance of the energy storage inverter 100 in a later period.

In some embodiments of the present utility model, the circumferential surface of the stud 411 is provided with the notch 401, and different numbers of notch 401 may be provided on the circumferential surfaces of different support columns 40 to prevent the support columns 40 from being fooled, so as to facilitate the differentiation of assembly personnel and facilitate the rapid assembly.

Referring to fig. 2, 4 and 6, in some embodiments of the present utility model, the housing 20 is provided with a mounting seat 60, and the mounting seat 60 is provided with an assembly hole 601, and the stud 411 is in threaded engagement with the assembly hole 601, so that the connection stability and flexibility between the circuit board 30 and the side plate 21 can be improved. Specifically, the mounting seat 60 is further arranged between the support column 40 and the side plate 21, the mounting seat 60 extends along the direction perpendicular to the side plate 21, the assembly holes 601 on the mounting seat 60 can be in threaded fit with the studs 411 of the support column 40, and the support column 40 can be conveniently connected with the side plate 21, so that the side plate 21 can be conveniently manufactured without arranging the assembly holes. In practical application, the mounting base 60 can be directly and fixedly connected to the side plate 21, and then connected with the support column 40 through the mounting base 60.

In some embodiments of the present utility model, when the energy storage inverter 100 needs to be provided with a plurality of circuit boards 30, one circuit board 30 may be fixed at the stepped structure of the mounting base 60 and the support column 40. Specifically, the mounting hole 301 of the circuit board 30 may pass through the stud 411 and abut against the step surface of the step structure, and after the stud 411 is screwed with the mounting hole 601 of the mounting seat 60, the circuit board 30 may be clamped between the mounting seat 60 and the support column 40; the other circuit board 30 can be matched and positioned with the positioning part through the positioning hole 402 of the second end 42 of the supporting column 40, so that two circuit boards 30 can be connected simultaneously, the two circuit boards 30 are stacked, space is saved, gaps are reserved between the two circuit boards 30, air flow can flow, heat dissipation effect is improved, the circuit boards 30 close to the side plates 21 can be separated from the side plates 21 through the mounting seats 60, air flow is facilitated, and heat dissipation effect is improved.

In some embodiments of the present utility model, the circuit board 30 is fixedly coupled to at least one of the heat sink 10 and the housing 20 to improve assembly flexibility and stability.

According to the energy storage inverter 100 of some embodiments of the present utility model, the board surface of the circuit board 30 is square, positioning holes 402 are formed at four corners of the board surface, four mounting seats 60 are formed on the side boards 21, and the four mounting seats 60 are respectively connected with four support columns 40, so that the stability of installation can be improved, and the use of the circuit board 30 is not affected by the mounting holes 301 formed at corners of the board surface.

Further, referring to fig. 1 and 2, the energy storage inverter 100 may further include a control board 80, where the control board 80 may be disposed in a tiled manner in the accommodating cavity 201, and when a plurality of control boards 80 are disposed in the energy storage inverter 100, the plurality of control boards 80 may also be disposed in a stacked manner, so as to facilitate spatial arrangement. Specifically, in combination with the foregoing, the two control boards 80 can also be connected and fixed by the mount 60 and the support column 40. For example, in assembly, the mounting base 60 is disposed on the heat sink 10, one control board 80 is disposed between the mounting base 60 and the support column 40, and another control board 80 is disposed between the support column 40 and the positioning portion.

Referring to fig. 3, in some embodiments of the present utility model, the heat sink 10 has a first side and a second side opposite to each other, the circuit board 30 is disposed on the first side of the heat sink 10, the second side of the heat sink 10 is provided with a plurality of heat dissipation fins 11, the plurality of heat dissipation fins 11 are disposed at intervals, the heat of the circuit board 30 is transferred to the first side of the heat sink 10, and the heat dissipation effect on the circuit board 30 is improved by the heat dissipation fins 11 on the second side, so that the space layout of the energy storage inverter 100 is reasonable, the structure is compact, and the miniaturization design of the energy storage inverter 100 is facilitated.

In order to improve the heat dissipation effect on the circuit board 30, the energy storage inverter 100 may further include a heat dissipation fan 70, the heat dissipation fan 70 may be disposed in the accommodating cavity 201, the heat dissipation fan 70 may drive airflow to flow, and the heat dissipation fan 70 is disposed in the accommodating cavity 201, the airflow in the accommodating cavity 201 is suitable for circulating the fluid under the driving action of the heat dissipation fan 70, thereby improving the heat dissipation effect in the accommodating cavity 201 and optimizing the operation environment in the accommodating cavity 201.

In some embodiments of the present utility model, energy storage inverter 100 may have at least one of a photovoltaic interface, a battery interface, a grid input interface, a dc output interface, and an ac output interface. Wherein, a solar panel or other renewable energy power generation system and the energy storage inverter 100 can be connected through a photovoltaic interface; the battery can store electric energy through the battery interface to connect the battery and the energy storage inverter 100, so that the electric energy of the battery can be conveniently converted and output through the energy storage inverter 100; the power grid input interface can be connected with high-voltage electric energy of a power grid, and the electric energy is output to low-voltage power equipment or system after being reduced by the energy storage inverter 100; the energy storage inverter 100 may include one or more of a photovoltaic interface, a battery interface, a grid input interface. The alternating current output interface can be connected with products requiring alternating current such as household appliances and the like, the energy storage inverter 100 can convert alternating current into direct current and output the direct current, the energy storage inverter 100 can further comprise a direct current output interface, wherein the direct current output interface can be connected with equipment requiring direct current such as a charging pile and a heat pump system and the like, the energy storage equipment can comprise one or more of the direct current output interface or the alternating current output interface, and the suitability of the energy storage inverter 100 is improved by setting the direct current output interface, so that the use requirements under different scenes are met.

The utility model also provides an energy storage system, which can comprise a battery and the energy storage inverter 100, wherein the energy storage inverter 100 is electrically connected with the battery, the energy storage inverter 100 can convert energy generated by solar energy, wind power generation or a fuel cell and the like into direct current and store the direct current into the battery, when the direct current is required to be used, the electric energy in the battery is output, the energy storage system can provide reliable energy storage for a user, and when the power is off or the power is insufficient, a standby power supply is provided for the user, so that the use of the direct current storage system is convenient.

According to the energy storage system provided by the embodiment of the utility model, by applying the energy storage inverter 100, the occupied space of the energy storage system is reduced, and the space arrangement is facilitated.

In some embodiments of the present utility model, energy storage inverter 100 may have a dc output interface, and the energy storage system further includes a powered device having a dc power supply port electrically connected to the dc output interface. The electric equipment can be equipment such as a charging pile which needs direct current electricity, electric energy in a photovoltaic, a power grid or a battery is input to a direct current power supply port through a direct current output interface through the energy storage inverter 100 to supply electricity to the electric equipment, the suitability of the energy storage inverter 100 is improved, the use scene of an energy storage system is enriched, and the use demands of users under different scenes are met.

In some embodiments of the utility model, the powered device may comprise a heating and ventilation device. The heating and ventilation equipment can be a central air conditioning system, a floor heating system, a heat pump and the like.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (14)

1. An energy storage inverter, comprising:

a heat sink;

the shell is connected with the radiator and forms a containing cavity with the radiator;

the circuit board is arranged in the accommodating cavity, and the plate surface of the circuit board is vertical relative to the radiator.

2. The energy storage inverter of claim 1, wherein the housing further comprises a side plate extending in a circumferential direction of the heat sink and surrounding the receiving cavity, and wherein a plate surface of the circuit board is laminated with the side plate.

3. The energy storage inverter of claim 2, wherein the circuit board is fixedly connected to the side plates.

4. The energy storage inverter of claim 2, wherein the side plates are provided with support columns, one ends of the support columns are connected with the side plates, the support columns extend in a direction perpendicular to the side plates, and the circuit board is connected with the other ends of the support columns.

5. The energy storage inverter of claim 4, wherein the support column has opposite first and second ends, the first end of the support column having a stud adapted to connect with the heat sink, the second end adapted to support the circuit board.

6. The energy storage inverter of claim 5, wherein the circuit board is provided with a mounting hole, the second end is provided with a positioning hole, the mounting hole is opposite to the positioning hole, and the energy storage inverter further comprises: and the positioning part is matched with the positioning hole so as to position the circuit board between the support column and the positioning part.

7. The energy storage inverter of claim 5, wherein the outer peripheral surface of the support post protrudes beyond the outer peripheral surface of the stud to construct a stepped structure between the support post and the stud.

8. The energy storage inverter of claim 5, wherein the stud is configured as a hexagonal prism; and/or the end part of the second end of the support column is provided with a tightening notch; and/or a notch groove is formed in the peripheral surface of the stud.

9. The energy storage inverter of claim 5, wherein a mounting seat is provided on the housing, an assembly hole is provided on the mounting seat, and the stud is in threaded fit with the assembly hole.

10. The energy storage inverter of claim 1, wherein the circuit board is fixedly connected to at least one of the heat sink and the housing.

11. The energy storage inverter of any of claims 1-9, wherein the heat sink has opposing first and second sides, the circuit board being disposed on the first side of the heat sink, the second side of the heat sink having a plurality of heat dissipating fins disposed thereon.

12. An energy storage system, comprising:

a battery;

the energy storage inverter of any of claims 1-10, electrically connected to the battery.

13. The energy storage system of claim 12, wherein the energy storage inverter has a dc output interface, the energy storage system further comprising a powered device having a dc power supply port electrically connected to the dc output interface.

14. The energy storage system of claim 13, wherein the powered device comprises a heating ventilation device.